ClassID:

200255

G21C15/26 - CPC Classification

Classification description:

Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants; Promoting flow of the coolant by convection, e.g. using chimneys, using divergent channels

Recent Application in this class:
#1
20260051415
2026-02-19

PASSIVE BUOYANCY DRIVEN FLUID SYSTEM

#2
20260051414
2026-02-19

PASSIVE BUOYANCY DRIVEN FLUID SYSTEM

#3
20260045376
2026-02-12

SYSTEM & METHOD FOR 3-D PRINTING A NUCLEAR REACTOR

#4
20260038704
2026-02-05

SYSTEM FOR HEAT TRANSFER BETWEEN PRIMARY AND SECONDARY FLUID CIRCUITS WITHIN A DIFFUSION-BONDED PRESSURE VESSEL WALL FOR A NUCLEAR REACTOR

#5
20250132064
2025-04-24

DIFFUSION-BONDED PRESSURE VESSEL FOR NUCLEAR REACTOR

#6
20250022620
2025-01-16

Molten Salt Nuclear Reactor of the Fast Neutron Reactor Type, Having a Design of the Primary Circuit Allowing Exploitation which is Versatile in Terms of Fuel and Mode of Operation

#7
20240420855
2024-12-19

NUCLEAR REACTOR FOR HEAT AND POWER GENERATION

#8
20240371535
2024-11-07

Nuclear Reactor with Liquid Coolant and Solid Fuel Assemblies, Integrating a System of Evacuation of the Nominal Power with Liquid Metal Bath and Material(s) (MCP) for the Evacuation of the Residual Power in the Event of an Accident

#9
20240355491
2024-10-24

NUCLEAR REACTOR FOR HEAT AND POWER GENERATION

#10
20240339230
2024-10-10

A LOW PRESSURE WATER REACTOR AND A METHOD FOR CONTROLLING A LOW PRESSURE WATER REACTOR

#11
20240312651
2024-09-19

PASSIVE EMERGENCY FEEDWATER SYSTEM

#12
20240304344
2024-09-12

NUCLEAR REACTOR WITH LIQUID HEAT TRANSFER AND SOLID FUEL ASSEMBLIES, INTEGRATING A NOMINAL POWER EVACUATION SYSTEM WITH A LIQUID METAL BATH AND MATERIAL(S) (MCP) FOR THE EVACUATION OF RESIDUAL POWER IN THE EVENT OF AN ACCIDENT

#13
20240266083
2024-08-08

NUCLEAR STEAM SUPPLY AND START-UP SYSTEM, PASSIVELY-COOLED SPENT NUCLEAR FUEL POOL SYSTEM AND METHOD THEREFOR, COMPONENT COOLING WATER SYSTEM FOR NUCLEAR POWER PLANT, PASSIVE REACTOR COOLING SYSTEM, STEAM GENERATOR FOR NUCLEAR STEAM SUPPLY SYSTEM

#14
20240079154
2024-03-07

CARBON NEGATIVE REACTORS

#15
20230402197
2023-12-14

IN-VESSEL NATURAL CIRCULATION ALKALI METAL REACTOR SYSTEM, PURIFICATION SYSTEM, AND ASSOCIATED METHODS

#16
20230386688
2023-11-30

Multipurpose passive residual heat removal system for small fluoride-salt-cooled high-temperature reactor

#17
20230260668
2023-08-17

Nuclear reactor passive reactivity control system

#18
20220367075
2022-11-17

PASSIVE TECHNIQUES FOR LONG-TERM REACTOR COOLING

#19
20220301729
2022-09-22

MOLTEN FUEL REACTOR THERMAL MANAGEMENT CONFIGURATIONS

#20
20220254528
2022-08-11

Emergency heat removal in a light water nuclear reactor by using a passive endothermic reaction cooling system

#21
20210319921
2021-10-14

Methods for airflow control in reactor passive decay heat removal using a damper

#22
20210210222
2021-07-08

Direct reactor auxiliary cooling system for a molten salt nuclear reactor

#23
20210174977
2021-06-10

Passive cooling structure for nuclear reactor

#24
20210142920
2021-05-13

Method of heating primary coolant outside of primary coolant loop during a reactor startup operation

#25
20210082589
2021-03-18

Reactor condition controlled check valve permits coolant to flow from a reservoir to an isolation condenser chamber

#26
20210050122
2021-02-18

Nuclear reactor vessel support system

#27
20200388409
2020-12-10

COMPONENT COOLING WATER SYSTEM FOR NUCLEAR POWER PLANT

#28
20200350084
2020-11-05

Passive techniques for long-term reactor cooling

#29
20200279660
2020-09-03

Molten fuel reactor thermal management configurations

#30
20200203029
2020-06-25

Passive techniques for long-term reactor cooling

#31
20200126679
2020-04-23

Core catcher and boiling water nuclear plant using the same

#32
20200098483
2020-03-26

Steam generator for nuclear steam supply system

#33
20200090823
2020-03-19

Reactor vessel reflector with integrated flow-through

#34
20200027596
2020-01-23

Passive reactor cavity cooling system

#35
20190333651
2019-10-31

Steam generator for nuclear steam supply system

#36
20190115115
2019-04-18

Methods of storing nuclear reactor internals

#37
20190115114
2019-04-18

Systems and methods for airflow control in reactor passive decay heat removal

#38
20190057789
2019-02-21

Method for heating a primary coolant in a nuclear steam supply system

#39
20190035510
2019-01-31

COOLING SYSTEM FOR NUCLEAR REACTOR

#40
20190006052
2019-01-03

Isolation condenser systems for nuclear reactor commercial electricity generation

#41
20180358134
2018-12-13

PASSIVE COOLING OF A NUCLEAR REACTOR

#42
20180261343
2018-09-13

Passive emergency feedwater system

#43
20180233240
2018-08-16

Nuclear power plant

#44
20180137944
2018-05-17

Direct reactor auxiliary cooling system for a molten salt nuclear reactor

#45
20180047469
2018-02-15

Component cooling water system for nuclear power plant

#46
20180005713
2018-01-04

AIR CIRCULATING DEVICE BELOW STEAM GENERATOR OF NUCLEAR REACTOR

#47
20170358373
2017-12-14

Core catcher and boiling water nuclear plant using the same

#48
20170316841
2017-11-02

Molten fuel reactor cooling and pump configurations

#49
20170229197
2017-08-10

Chimney structure with internal partitions having a common center, a reactor including the chimney structure, and a method of manufacturing the same

#50
20170133112
2017-05-11

Nuclear reactor system having natural circulation of primary coolant

#51
20170011812
2017-01-12

Chimneys having joinable upper and lower sections where the lower section has internal partitions

#52
20160336082
2016-11-17

Reactor system with a lead-cooled fast reactor

#53
20160322121
2016-11-03

Passive residual heat removal system and atomic power plant comprising same

#54
20160196885
2016-07-07

Steam generator for nuclear steam supply system

#55
20160180973
2016-06-23

Reactor pressure vessel assembly including a flow barrier structure

#56
20160148709
2016-05-26

Stable startup system for nuclear reactor

#57
20160042820
2016-02-11

Method of storing a chimney assembly of a reactor pressure vessel during a nuclear reactor outage

#58
20150332793
2015-11-19

Natural-circulation boiling water reactor and chimney therefor

#59
20150255181
2015-09-10

Nuclear power generation system

#60
20150243384
2015-08-27

Water supply tank using compressor steam to provide cooling water to a nuclear reactor, and structure inside the tank reducing internal cooling water circulation resulting from injection of the steam into the tank

#61
20150243382
2015-08-27

Passive containment air cooling device and system with isolated pressure boundary

#62
20150200023
2015-07-16

Nuclear reactor chimney and method of improving core inlet enthalpy using the same

#63
20150170772
2015-06-18

Component cooling water system for nuclear power plant

#64
20150170769
2015-06-18

Passive reactor containment protection system

#65
20150110236
2015-04-23

Nuclear steam supply system

#66
20150023461
2015-01-22

Decay heat removal system with hybrid heat pipe having coolant and neutron absorber for cooling nuclear power plant

#67
20140362968
2014-12-11

System for removing the residual power of a pressurised water nuclear reactor

#68
20140226776
2014-08-14

Feedwater temperature control methods and systems

#69
20140090249
2014-04-03

Heat exchanger, methods therefor and a nuclear fission reactor system

#70
20140072089
2014-03-13

METHOD AND SYSTEM FOR AN ALTERNATIVE BWR CONTAINMENT HEAT REMOVAL SYSTEM

#71
20140029711
2014-01-30

Passive power production during a nuclear station blackout

#72
20130336441
2013-12-19

Small modular reactor safety systems

#73
20130272475
2013-10-17

Passive containment air cooling for nuclear power plants

#74
20130266111
2013-10-10

Steam generator flow by-pass system

#75
20130235968
2013-09-12

Reactor vessel coolant deflector shield

#76
20130182813
2013-07-18

Integral pressurized water reactor with external steam drum

#77
20130182808
2013-07-18

Stable startup system for a nuclear reactor

#78
20130156143
2013-06-20

EMERGENCY CORE COOLING SYSTEM (ECCS) FOR NUCLEAR REACTOR EMPLOYING CLOSED HEAT TRANSFER PATHWAYS

#79
20130140005
2013-06-06

Condensation chamber cooling system

#80
20120307956
2012-12-06

NUCLEAR REACTOR SYSTEM HAVING NATURAL CIRCULATION OF PRIMARY COOLANT

#81
20120294408
2012-11-22

Passive emergency feedwater system

#82
20120177168
2012-07-12

Passive emergency feedwater system

#83
20110075787
2011-03-31

Heat exchanger, methods therefor and a nuclear fission reactor system

#84
20100124306
2010-05-20

Reactor vessel reflector with integrated flow-through

#85
20100124303
2010-05-20

Steam generator flow by-pass system

#86
20090129532
2009-05-21

Stable startup system for a nuclear reactor

#87
20090129530
2009-05-21

Passive emergency feedwater system

#88
20090116608
2009-05-07

Natural circulation type boiling water reactor

#89
20090016479
2009-01-15

Feedwater temperature control methods and systems

#90
20070274428
2007-11-29

NATURAL CIRCULATION TYPE BOILING WATER REACTOR